[FFmpeg-user] duplicate symbol

[桃源老師]

Hello Reindl -san, 

> 2018/10/09 午後10:21、Reindl Harald <h.reindl at thelounge.net>のメール:
> 
> 
> http://www.catb.org/esr/faqs/smart-questions.html#beprecise
> 
> Am 09.10.18 um 14:56 schrieb 桃源老師:
>> Hello list member, 
>> 
>> I’m now trying to build static ffmpeg on macOS Mojave 10.14.
>> 
>> Then I got the following "duplicate symbol” error at linking.
>> 
>> How can I fix it???   Please help me!!
>> 
>> 
>> CC	fftools/ffmpeg_videotoolbox.o
>> LD	ffmpeg_g
>> duplicate symbol _get_rdmult_delta in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encodeframe.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encodeframe.c.o)
>> duplicate symbol _init_tpl_stats in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _init_gop_frames in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _get_quantize_error in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _round_floor in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _mc_flow_dispenser in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _motion_compensated_prediction in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _mode_estimation in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _wht_fwd_txfm in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _tpl_model_update in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _tpl_model_store in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _tpl_model_update_b in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> duplicate symbol _get_overlap_area in:
>>    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
>>    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
>> ld: 13 duplicate symbols for architecture x86_64
>> clang: error: linker command failed with exit code 1 (use -v to see invocation)
>> make: *** [ffmpeg_g] Error 1


1. I can successfully configure ffmpeg.
2.Then I run “make” command.
3.Near last portion of “make” process, "LD	ffmpeg_g” tells me it’s final linking process, then I got “duplicate symbol” error on that process.
4.The console output of near the error is above.


Am I explained what is my problem is?


Best Regards,




// Miya aka. TougenRoushi